Coreopsis. COMPOSITtE. . 345 



about the length of the inner, acute or acuminate ; rays 4-5-cleft at the 

 apex ; achenia orbicular, winged, incurved, crowned with 2 short denticu- 

 late-fimbriate squamellate leeih. — Nutt. ! inhort. Barclay, Sfin trans. Amer. 

 phil. soc. I. c. p. 358 ; Hogg, in Stveet, Brit.Ji. gard. t. 175 ; DC. ! prodr. 

 5. p. 572. 



(3. longipes: heads rather smaller ; exterior involucre shorter than the in- 

 ner ; radical leaves commonly undivided.— C. longipes, Hook. ! hot. mag. t. 

 3586 ; DC. prodr. 7. p. 290. 



y. subinlcgri folia: radical and lowest cauline leaves narrowly linear or 

 lanceolate, entire; one or more of the upper 3-parted, the lateral segments 

 smaller; exterior involucre usually shorter than the inner. — C. Boykiniana, 

 Nutt. ! in trans. Amer. phil. soc. I. c. 



Plains of Arkansas, Western Louisiana, and Texas, Nuttall ! Dr. Pitch- 

 er! Dr. Leavenworth ! Dr. Engclmunn! Drummond ! (a. 6c i3.) Also Al- 

 abama, Dr. Gates! y. Texas^ Drummond ! Southern Missouri, Dr. En- 

 gelmann! Georgia, LeConte ! Dr.Boykln! July-Sept. — U Plant 8-12 

 inches high. Heads resembling those of C lanceolata. Chaff attenuate- 

 filiform. Achenia brownish, often minutely luberculate on one or both sides, 

 as in all the species of this section. 



16. C. coronata (Hook.) : stem slender, erect or difllisely branched, naked 

 and glabrous except near the base ; leaves flaccid, hairy, on slender petioles, 

 spalulate-oval or oblong, obtuse, entire, or the lowest 3-5-divided ; the lateral 

 divisions oblong, small ; scales of the exterior involucre lanceolate, ciliate, 

 shorter than the inner ; rays 5-cleft at the apex, " marked with a purple spot 

 at the base" ; achenia oval, incurved, narrowly winged, crowned with 2 

 (2-3) squamellate teeth. — Hook. ! hot. mag. t. 34(J0, not o^ Linn. ^r. 



Texas, Drum)n.ond ! Mr. Lhulheim.er!—(X) Plant 8-15 inches high, either 

 simple or branched near the base; which alone is leafy: the naked portion, 

 or peduncle, 6-10 inches long. Heads smaller than in C. lanceolata, &c. 

 Limb of the leaves an inch long. — The rays are sometimes entirely yellow. 



§ 2. Branches of the style truncate and slightly penicillate at the apex : ache- 

 nia naked at the summit, or ivith two short or obscure teeth, more or less in- 

 curved, often minutely lubercidate : chaff deciduous with the fruit: exterior 



■ involucre small : rays mostly 2-colored {yelloiv with a brownish-purple spot 

 at the base), toothed: disk-floivers dark purple or broivnish : leaves opposite, 

 1-2-pinnately divided, the lobes entire. — Calliopsis, Reichenb., DC. 



* Achenia wingless. ^ 



17. C. Drummondii : annual, more or less pubescent or hirsute with joint- 

 e5 hairs ; leaves pinnately 3-5-divided, or sotnetimes simple ; the divisions 

 (or leaves) oval or oblong, entire, or with the margin undulate ; scales of the 

 exterior involucre lanceolate-acuminate, a little shorter than the interior; 

 rays unequally 5-toothed, twice the length of the involucre ; achenia obovate, 

 wingless, strongly incurved, naked or minutely 2-toothed at the aj)ex, 

 smooth or obscurely tuberculate. — C. diversifolia. Hook.! hot. mag. I. 3474, 

 not of DC. Calliopsis Diummondii, Don, in Sweet, Brit. f. gard. ser.2. 

 t. 315. 



a. leaves mostly pinnately 3-7-divided ; the divisions entire, or frequently 

 3-parled. 



Texas, Drummond !—Slem 6-20 inches high, branched above. Rays 

 with a small purplish spot at the base. Achenia much incurved. 

 VOL. u. — 44 



